EP2383232A1 - Système et procédé pour la concentration de coulis de ciment - Google Patents

Système et procédé pour la concentration de coulis de ciment Download PDF

Info

Publication number
EP2383232A1
EP2383232A1 EP10161498A EP10161498A EP2383232A1 EP 2383232 A1 EP2383232 A1 EP 2383232A1 EP 10161498 A EP10161498 A EP 10161498A EP 10161498 A EP10161498 A EP 10161498A EP 2383232 A1 EP2383232 A1 EP 2383232A1
Authority
EP
European Patent Office
Prior art keywords
slurry
recipient
separation unit
cake
anode
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP10161498A
Other languages
German (de)
English (en)
Other versions
EP2383232B1 (fr
Inventor
Jörg Sötemann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Omya International AG
Original Assignee
Omya Development AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to PT101614980T priority Critical patent/PT2383232E/pt
Application filed by Omya Development AG filed Critical Omya Development AG
Priority to SI201030823T priority patent/SI2383232T1/sl
Priority to DK10161498.0T priority patent/DK2383232T3/en
Priority to ES10161498.0T priority patent/ES2526762T3/es
Priority to EP10161498.0A priority patent/EP2383232B1/fr
Priority to US13/641,755 priority patent/US9339763B2/en
Priority to KR1020127031095A priority patent/KR101835162B1/ko
Priority to RU2012151157/05A priority patent/RU2565690C2/ru
Priority to EP11717591A priority patent/EP2563726A1/fr
Priority to PCT/EP2011/056728 priority patent/WO2011135022A1/fr
Priority to JP2013506658A priority patent/JP5941907B2/ja
Priority to CA2796751A priority patent/CA2796751A1/fr
Priority to CN201180026354.8A priority patent/CN102933505B/zh
Publication of EP2383232A1 publication Critical patent/EP2383232A1/fr
Application granted granted Critical
Publication of EP2383232B1 publication Critical patent/EP2383232B1/fr
Priority to US14/976,142 priority patent/US9387439B2/en
Priority to US14/976,130 priority patent/US9643126B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D57/00—Separation, other than separation of solids, not fully covered by a single other group or subclass, e.g. B03C
    • B01D57/02—Separation, other than separation of solids, not fully covered by a single other group or subclass, e.g. B03C by electrophoresis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D43/00—Separating particles from liquids, or liquids from solids, otherwise than by sedimentation or filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B1/00—Cleaning by methods involving the use of tools
    • B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
    • B08B1/16—Rigid blades, e.g. scrapers; Flexible blades, e.g. wipers
    • B08B1/165—Scrapers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C1/00—Apparatus or methods for obtaining or processing clay
    • B28C1/02—Apparatus or methods for obtaining or processing clay for producing or processing clay suspensions, e.g. slip
    • B28C1/06—Processing suspensions, i.e. after mixing
    • B28C1/08—Separating suspensions, e.g. for obtaining clay, for removing stones; Cleaning clay slurries
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
    • C02F1/4696—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electrophoresis
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/15—Treatment of sludge; Devices therefor by de-watering, drying or thickening by treatment with electric, magnetic or electromagnetic fields; by treatment with ultrasonic waves
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/16—Regeneration of sorbents, filters

Definitions

  • the present invention relates to a system and a method for the concentration of slurry, especially mineral containing slurry.
  • US 1,133, 967 discloses an apparatus for an electroosmotic process having a suspension container and suspension agitating means, which comprise an anode and a cathode locked between the anode and the agitating means, where the cathode is provided with openings of much greater length than width.
  • the anode according to this invention is cylindrical.
  • US 3,972,799 describes an apparatus for removing solids from drilling mud.
  • the apparatus comprises a horizontal container with a plurality of spaced-apart rotating plate-like discs as anodes arranged between pluralities of spaced-apart interconnected panels as cathodes with a peripheral portion of each disc immersed in the drilling mud, where the discs are rotated by a motor.
  • Solids in suspension are attracted by and deposited as a layer or film on opposing surfaces of the respective discs and stationary scraper blade elements arranged adjacent to the discs remove the deposited solids.
  • US 5,171,409 (the equivalent of EP 0 253 749 ) proposes a process of continuously separating electrically charged, solid pulverous materials in the form of a suspension in an electrophoresis and electroosmosis cell, wherein a fraction of the catholyte is drained off, a portion thereof is treated with an acid, preferably gaseous, agent, the treated portion is re-introduced into the cathode compartment, whereas the other part of the drained-off fraction is eliminated.
  • an acid preferably gaseous, agent
  • a device for the concentration of a slurry, with a supporting structure for receiving modules therein, the modules comprising
  • the electrophoresis cell may be a container for taking up the slurry, designed to include a single or multiple-compartments for electrophoresis.
  • the electrophoresis cell is a multiple-compartment cell, this may be formed by welding plates into the container, so that the multiple-compartment container is made from an outer container shell with flanges fixed inside the container to form the compartments.
  • the multi-compartment slurry container is a single integral piece.
  • the cathode is represented by one or more plates or other means positioned in the electrophoresis cell. If the electrophoresis cell or container is the cathode, no separate linkage to the power supply is necessary and the (multi) compartment slurry container is electrically isolated from all other components.
  • anode discs be partially exposed to the slurry and partially exposed to a gaseous environment such as air. It is further intended that the shoulders of separation units be located adjacent to a portion of anode exposed to a gaseous environment. It is preferred that the separation units be located in an approximately horizontal position.
  • the anode discs are arranged vertically within a given compartment. In order to rotate the anode discs, they are preferably mounted on a drive shaft for rotation. Further the anode discs can be fixed on the drive shaft by means of fixation flanges, defining the distance between the anode discs. The anodes respectively the anode discs are electrically connected by jumper rings that are provided.
  • the outer wall of the container is half cylindrical and adjusted to the diameter of the anodes to produce a predefined distance between cathode and anode discs.
  • the half cylindrical container design facilitates the requirement that the anodes are only partially exposed to the slurry.
  • At least one inlet opening for the slurry is positioned at the bottom of each electrophoresis cell and an overflow at the upper margin.
  • the inlet openings can be distributed over the circumference of each cell.
  • the preferred material for the anodes is titanium with an anticorrosive coating.
  • muffs may be used to ensure an appropriate distance is maintained between the cathode(s) and anodes, said distance being critical for the dewatering process. Alternating muffs and anode discs can form a unit that is slid onto the shaft. It is also important that the distance between the anode disc and the separation unit be constant. Cross sectional areas of the muffs may be used to guarantee that the anode discs cannot move on the shaft.
  • the jumper ring can be made with gold contacts so that higher voltages are possible in up scaled systems.
  • the contacts are preferably elastic.
  • the preferred material is aluminium.
  • This frame represents the backbone of the system and all other parts are attached to this frame. Plates of synthetic material can be used to isolate the supporting frame from the container when the latter represents the cathode. Further plates may be used as support for the anode unit and the motor for rotating the anode respectively the shaft.
  • the preferred form of the recipient of the separation unit is half cylindrical or half rectangular with a piston adapted to the recipient form. It is obvious for a person skilled in the art that other forms may apply to the recipient.
  • the separation unit is preferably made of synthetic material, especially poly-tetra-fluoroethylene (PTFE) or any other material with good sliding properties. Since the shoulders of the half cylinder are adjusted to the adjacent anode discs there is no need for a separate scraper. This has the major advantage that solid material or cake will not be collected on the scraper. In combination with the sliding carriage for closing the separation unit, the solid material will be completely pressed out of the separation unit.
  • An open half cylinder i.e. without a sliding door, resulted in experiments of the inventors in solid material that has been accumulated on the scraper and the piston resulting in an incomplete removal of the solid material or cake.
  • the separation unit is ideally exactly positioned between two anode discs, such that the separation unit may serve to remove cake from two anode discs simultaneously.
  • the resting opening between separation unit and anode is preferably about 1 mm.
  • the separation unit may be fixed by synthetic mountings at the supporting frame.
  • piston and half cylinder By making piston and half cylinder from the same material, any disadvantages according to different thermal expansion are avoided.
  • piston be driven pneumatically. Any other means for driving the piston, e.g. hydraulically, are also within the scope of the invention.
  • the angle of rotation of the anodes in each cycle shall be preferably about 10° in combination with a preferred length of stay of the anode segments of about 3 min.
  • a voltage between 10 V and 40 V is applied to the electrodes.
  • the voltage depends on the material forming the electrodes and the composition of the slurry. It should be limited with regard to corrosion of the anode and thus not be above 60 V.
  • the device according to the invention is optimized for slurry that has a mineral content of preferably between 10 - 50 % and more preferably between 20 - 24 % and a defined particle size. Parameters such as voltage can be adjusted to other slurries without changing the distance between the electrodes as this is predetermined by the construction of an electrophoresis cell.
  • the preferred material to be used in the device is slurry containing negatively-dispersed calcium carbonate particles.
  • Another object of the present invention is a method for the concentration of a slurry using a device according to the invention comprising the following steps:
  • the concentration process be driven discontinuously, implying a step of the anode resting in the slurry and a step of the anode being rotated in order to receive the solid material or cake, in order to be able to remove the material efficiently.
  • the method is optimized for slurries containing mineral particles, especially calcium carbonate and notably negatively-dispersed calcium carbonate.
  • Cationically dispersed calcium carbonate may additionally or alternatively be employed.
  • tensides such as dispersants
  • the resulting charge corresponds to the charge of the tenside. In this way it is possible to enhance or change the charge of the dispersed particle so that they will move to the anode or cathode as required.
  • the optimal parameters for the method are a voltage of about 20 V and an angle of rotation of about 10°, where hoist time and interval time can be adjusted to characteristics of the slurry.
  • Preferred is a length of stay of the anode disc of about 3 min.
  • Fig. 1 shows that the voltage applied to the electrodes has a considerable influence on the solid content of the deposition cake resp. the osmosis.
  • Solid content and deposition rate ( Fig. 2 ) increase with raising the voltage, but the energy consumption ( Fig. 3 ) increases disproportionally.
  • the reason for this effect is an increase in electrolysis of the contained water. It is a serious problem that the electrophoresis of the water content leads to the production of hydrogen and oxygen, which form an explosive mixture with the surrounding air. It is not possible to reduce the voltage to a level that no hydrogen is produced.
  • the deposition cake on the anode reduces the opening between cathode and anode.
  • the experiments showed a physical thickness of the anode cake of about up to 10 mm. It has to be guaranteed that the residual opening between the electrodes is suitable for the flow through of the slurry. In Fig. 5 a stagnation of the deposition rate can be observed for a distance of electrodes above 20 mm. This might reflect the effect of minimizing the opening between the electrodes by the anode cake.
  • the anodes can rotate continuously or in intervals.
  • the increasing anode cake on the anode disc 50 leads to an increase of the electrical resistance as the solid cake has a higher electrical resistance than the slurry.
  • the deposition rate decreases ( Fig. 8 ) and the energy consumption increases ( Fig. 9 ), while the solid content of the anode cake still increases ( Fig. 7 ).
  • Angle of rotation and retention time are important parameter with regard to the total amount of anode cake deposited on the anode disc 50.
  • the volume of the anode cake has to correlate with the volume of the separation unit in order to avoid overfilling of the separation unit, as this would lead to remaining solid particles on the anode disc 50.
  • the skilled man would adapt the degree of rotation according to the thickness of the cake on the anode, i.e. the thicker the cake is, the smaller the degree of rotation of the anode before the recipient 40 is filled.
  • the distance of electrodes is basically predefined by the concept of the multi compartment slurry container 60 as shown in Fig. 11 .
  • the remaining parameters have to be chosen in order to optimize solid content of the anode cake and obtain a high deposition rate.
  • Table 1 shows the parameters that have been chosen for a device according to the invention.
  • Starting parameter solid content spec. deposition rate spec. energy consumption (preferred parameter) (%) F FS ( kg / m 2 h )
  • Preferred operating cond Preferred operating cond.
  • Figure 10 shows a separation unit that comprises a recipient 40 for receiving the cake material from a rotating anode 50.
  • the shoulders 30 of the recipient 40 are dimensioned to act as scraping flange for taking off the solid material or cake from the anodes 50. Collected material will be pressed out of the recipient 40 by a piston 20 which is driven by a pneumatic cylinder 21 that is regulated through valves 22. It is intended that the recipient could be closed with a sliding carriage 10.
  • the sliding carriage 10 comprises a cover 11 and guiding rods 12.
  • the sliding carriage 10 for closing the recipient 40 has a wiper at the front, for collecting residual material from the shoulders 30 into the recipient 40 while closing it.
  • FIG 11 shows the arrangement of the separation units and the anode discs 50.
  • the recipients 40 are closed in order to press the collected solid material out by moving the piston 20.
  • the recipients are open and ready for collecting solid material from the rotating anodes 50.
  • all recipients 40 which are arranged next to anode discs 50 are connected via a connection bar 6.
  • the connection bars 6 are connected with the pneumatic cylinders 21 that are mounted onto the frame 5.
  • the anode discs 50 are rotating vertically in the container 60.
  • the anode discs 50 are fixed on a drive shaft 7 that is rotated by a single drive 8 being mounted on a stationary table 9.
  • the recipients can be closed with the sliding carriage 10 comprising cover 11 and comprising guiding rods 12.
  • Fig. 12 shows an electrophoresis cell with inlet 61 and overflow 62.
  • a vertical rotating anode disc 50 rotates within a compartment of a multi compartment container 60. Slurry is filled in at the inlet openings 61 and the dewatered slurry leaves the container via the overflow 62. It is intended to arrange the inlet openings 61 at the bottom of the container 60 and the outlet 62 at the upper margin of the container 60.
  • each compartment of a multi compartment container 60 with fresh slurry by equally dividing the flow of fresh slurry. It is advantageous that only one pump might be used for this way of filling an electrophoresis cell. Another possibility is to fill a compartment with the overflow slurry of the previous compartment, resulting in a solid content gradient in a row of compartments. It has to be noted that the formation of solid material on the anodes 50 stops below a solid content of the slurry of about 9 to 10 %, so that a slurry with a solid content below this value might be supplemented with solid material from a buffer storage or has to be removed from the process.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Environmental & Geological Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Hydrology & Water Resources (AREA)
  • Electrochemistry (AREA)
  • Mechanical Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)
  • Electrostatic Separation (AREA)
  • Centrifugal Separators (AREA)
EP10161498.0A 2010-04-29 2010-04-29 Système et procédé pour la concentration de coulis de ciment Active EP2383232B1 (fr)

Priority Applications (15)

Application Number Priority Date Filing Date Title
SI201030823T SI2383232T1 (sl) 2010-04-29 2010-04-29 Sistem in postopek za koncentriranje blata
DK10161498.0T DK2383232T3 (en) 2010-04-29 2010-04-29 System and method for concentrating a slurry
ES10161498.0T ES2526762T3 (es) 2010-04-29 2010-04-29 Sistema y método para la concentración de una suspensión
EP10161498.0A EP2383232B1 (fr) 2010-04-29 2010-04-29 Système et procédé pour la concentration de coulis de ciment
PT101614980T PT2383232E (pt) 2010-04-29 2010-04-29 Sistema e método para a concentração de uma pasta fluida
EP11717591A EP2563726A1 (fr) 2010-04-29 2011-04-28 Système et méthode de concentration d'une bouillie
KR1020127031095A KR101835162B1 (ko) 2010-04-29 2011-04-28 슬러리 농축 시스템 및 방법
RU2012151157/05A RU2565690C2 (ru) 2010-04-29 2011-04-28 Устройство и способ сгущения суспензии
US13/641,755 US9339763B2 (en) 2010-04-29 2011-04-28 System and method for the concentration of a slurry
PCT/EP2011/056728 WO2011135022A1 (fr) 2010-04-29 2011-04-28 Système et méthode de concentration d'une bouillie
JP2013506658A JP5941907B2 (ja) 2010-04-29 2011-04-28 スラリーの濃縮のためのシステムおよび方法
CA2796751A CA2796751A1 (fr) 2010-04-29 2011-04-28 Systeme et methode de concentration d'une bouillie
CN201180026354.8A CN102933505B (zh) 2010-04-29 2011-04-28 用于浓缩浆料的系统和方法
US14/976,130 US9643126B2 (en) 2010-04-29 2015-12-21 System and method for the concentration of a slurry
US14/976,142 US9387439B2 (en) 2010-04-29 2015-12-21 System and method for the concentration of a slurry

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10161498.0A EP2383232B1 (fr) 2010-04-29 2010-04-29 Système et procédé pour la concentration de coulis de ciment

Publications (2)

Publication Number Publication Date
EP2383232A1 true EP2383232A1 (fr) 2011-11-02
EP2383232B1 EP2383232B1 (fr) 2014-10-08

Family

ID=42735664

Family Applications (2)

Application Number Title Priority Date Filing Date
EP10161498.0A Active EP2383232B1 (fr) 2010-04-29 2010-04-29 Système et procédé pour la concentration de coulis de ciment
EP11717591A Withdrawn EP2563726A1 (fr) 2010-04-29 2011-04-28 Système et méthode de concentration d'une bouillie

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP11717591A Withdrawn EP2563726A1 (fr) 2010-04-29 2011-04-28 Système et méthode de concentration d'une bouillie

Country Status (12)

Country Link
US (3) US9339763B2 (fr)
EP (2) EP2383232B1 (fr)
JP (1) JP5941907B2 (fr)
KR (1) KR101835162B1 (fr)
CN (1) CN102933505B (fr)
CA (1) CA2796751A1 (fr)
DK (1) DK2383232T3 (fr)
ES (1) ES2526762T3 (fr)
PT (1) PT2383232E (fr)
RU (1) RU2565690C2 (fr)
SI (1) SI2383232T1 (fr)
WO (1) WO2011135022A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111977755A (zh) * 2020-08-20 2020-11-24 广东自远环保股份有限公司 一种用于印制线路板废水处理系统的电渗透脱水方法
CN111977756A (zh) * 2020-08-20 2020-11-24 广东自远环保股份有限公司 一种用于印制线路板废水处理系统的电渗透脱水设备

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10103797B2 (en) * 2013-03-01 2018-10-16 Intel IP Corporation Quasi co-location and PDSCH resource element mapping signaling for network assisted interference mitigation
WO2022202612A1 (fr) * 2021-03-22 2022-09-29 三菱化工機株式会社 Dispositif de filtration

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1133967A (en) 1914-02-26 1915-03-30 Elektro Osmose Mbh Apparatus for electro-osmotic processes.
US3972799A (en) 1975-05-27 1976-08-03 Taylor Julian S Apparatus for removing solids from drilling mud
FR2367526A1 (fr) * 1976-10-13 1978-05-12 Chronberg Sten Procede et installation pour l'extraction de particules solides presentes en suspension liquide
US4107026A (en) 1976-06-17 1978-08-15 Dorr-Oliver Incorporated System and method for electric dewatering of solids suspension
GB2077293A (en) * 1980-06-05 1981-12-16 Electricity Council Electrophoretic separation
EP0253749A1 (fr) 1986-07-18 1988-01-20 Omya S.A. Procédé de séparation en continu par électrophorèse et électro-osmose de matières solides pulvérulentes électriquement chargées
US5171409A (en) 1986-07-18 1992-12-15 Omya S.A. Continuous process of separating electrically charged solid, pulverulent particles by electrophoresis and electroosmosis
GB2259459A (en) * 1991-09-11 1993-03-17 Peter George Nicholls Fine screen for sewage
US20080217065A1 (en) * 2007-03-09 2008-09-11 M-I Llc Method and apparatus for electrophoretic separation of solids and water from oil based mud

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU129182A1 (ru) 1959-06-11 1959-11-30 С.С. Жаданов Машина дл непрерывного электрофоретического осаждени твердых частиц из суспензии
US3700107A (en) * 1970-11-18 1972-10-24 Edmond Flaviani Apparatus for recovery of floating substances
DE2610660C3 (de) * 1976-03-13 1979-02-22 Philips Patentverwaltung Gmbh, 2000 Hamburg Drehanoden-Röntgenröhre
GB1526560A (en) * 1976-11-17 1978-09-27 Electricity Council Separation of particulate material from sludge slurries and the like flowable material
JPS53126573A (en) * 1977-04-12 1978-11-04 Kleentek Ind Electrostatic puritier with rotary electrodes for cleaning insulation liquid
JPS57133062U (fr) * 1981-06-25 1982-08-19
JPH0847691A (ja) * 1994-08-04 1996-02-20 Nitto Denko Corp 分離装置
GB9602625D0 (en) * 1996-02-09 1996-04-10 Clegg Water Conditioning Inc Modular apparatus for the demineralisation of liquids
CN1192939A (zh) * 1997-01-21 1998-09-16 孙复华 电螺旋加压脱水机
JP2002177819A (ja) * 2000-12-08 2002-06-25 Zeotekku Kenkyusho:Kk 液中不純物静電凝集吸着分離装置
US7631564B1 (en) * 2008-06-06 2009-12-15 General Electric Company Direct shaft power measurements for rotating machinery
EP2329712A1 (fr) 2009-12-07 2011-06-08 Omya Development AG Procédé pour la stabilisation bactérienne du carbonate de calcium aqueux naturel et/ou du carbonate de calcium précipité et/ou de la dolomite et/ou de préparations minérales comprenant du carbonate de calcium à réaction en surface

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1133967A (en) 1914-02-26 1915-03-30 Elektro Osmose Mbh Apparatus for electro-osmotic processes.
US3972799A (en) 1975-05-27 1976-08-03 Taylor Julian S Apparatus for removing solids from drilling mud
US4107026A (en) 1976-06-17 1978-08-15 Dorr-Oliver Incorporated System and method for electric dewatering of solids suspension
FR2367526A1 (fr) * 1976-10-13 1978-05-12 Chronberg Sten Procede et installation pour l'extraction de particules solides presentes en suspension liquide
GB2077293A (en) * 1980-06-05 1981-12-16 Electricity Council Electrophoretic separation
EP0253749A1 (fr) 1986-07-18 1988-01-20 Omya S.A. Procédé de séparation en continu par électrophorèse et électro-osmose de matières solides pulvérulentes électriquement chargées
US5171409A (en) 1986-07-18 1992-12-15 Omya S.A. Continuous process of separating electrically charged solid, pulverulent particles by electrophoresis and electroosmosis
GB2259459A (en) * 1991-09-11 1993-03-17 Peter George Nicholls Fine screen for sewage
US20080217065A1 (en) * 2007-03-09 2008-09-11 M-I Llc Method and apparatus for electrophoretic separation of solids and water from oil based mud

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111977755A (zh) * 2020-08-20 2020-11-24 广东自远环保股份有限公司 一种用于印制线路板废水处理系统的电渗透脱水方法
CN111977756A (zh) * 2020-08-20 2020-11-24 广东自远环保股份有限公司 一种用于印制线路板废水处理系统的电渗透脱水设备

Also Published As

Publication number Publication date
PT2383232E (pt) 2015-01-05
JP2013527031A (ja) 2013-06-27
ES2526762T3 (es) 2015-01-15
KR20130079412A (ko) 2013-07-10
EP2563726A1 (fr) 2013-03-06
SI2383232T1 (sl) 2015-01-30
US9339763B2 (en) 2016-05-17
WO2011135022A1 (fr) 2011-11-03
US9387439B2 (en) 2016-07-12
CN102933505A (zh) 2013-02-13
US20160101388A1 (en) 2016-04-14
US9643126B2 (en) 2017-05-09
US20160144319A1 (en) 2016-05-26
CN102933505B (zh) 2014-06-18
RU2565690C2 (ru) 2015-10-20
US20130192991A1 (en) 2013-08-01
JP5941907B2 (ja) 2016-06-29
CA2796751A1 (fr) 2011-11-03
EP2383232B1 (fr) 2014-10-08
DK2383232T3 (en) 2015-01-12
KR101835162B1 (ko) 2018-03-06
RU2012151157A (ru) 2014-06-10

Similar Documents

Publication Publication Date Title
CA1084873A (fr) Procede et appareil pour la reparation de solides en suspension dans un liquide sous l'effet d'un champ electrique
US4048038A (en) Electroflocculation cell
US4755305A (en) Continuous dewatering method
US9643126B2 (en) System and method for the concentration of a slurry
US4207158A (en) Electrically augmented vacuum filtration
US3980547A (en) Electrokinetic cell
US4132626A (en) Electroflocculation cell
US4168222A (en) Electrically augmented vacuum filtration
US5171409A (en) Continuous process of separating electrically charged solid, pulverulent particles by electrophoresis and electroosmosis
AU601447B2 (en) A continuous process of separating electrically charged solid, pulverulent particle by electrophoresis and electroosmosis
RU2535048C2 (ru) Способ извлечения сапонитсодержащих веществ из оборотной воды и устройство для его реализации
US4670118A (en) Electrode assembly and process for electrically augmented vacuum filtration
Wallden et al. Electrolytic copper refining at high current densities
JPS61274711A (ja) 固形物の懸濁液から水を除去するための脱水方法および装置
Sunderland Electrokinetic dewatering and thickening. III. Electrokinetic cells and their application to a range of materials
US10486108B2 (en) Electrokinetic dewatering of phosphatic clay suspensions
KR940001405B1 (ko) 음전하의 고체 입자를 함유하는 현탁액의 분리방법
Sunderland Electrokinetic dewatering of ball clay
EP0084582A1 (fr) Déshydratation avec un filtre sous vide à accélération électrique
CS216814B2 (en) Method of dewatering of the suspension and device for executing the same
JPS58153514A (ja) イオン交換膜を備えた電極組立体
RU2529220C2 (ru) Способ обесшламливания оборотных сапонитсодержащих вод и устройство для его реализации

Legal Events

Date Code Title Description
AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

AX Request for extension of the european patent

Extension state: AL BA ME RS

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20120502

17Q First examination report despatched

Effective date: 20120925

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: OMYA INTERNATIONAL AG

RIC1 Information provided on ipc code assigned before grant

Ipc: B01D 57/02 20060101ALI20140213BHEP

Ipc: B28C 1/08 20060101ALI20140213BHEP

Ipc: C02F 1/469 20060101AFI20140213BHEP

Ipc: C02F 11/12 20060101ALI20140213BHEP

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20140423

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

AX Request for extension of the european patent

Extension state: AL BA ME RS

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

Ref country code: AT

Ref legal event code: REF

Ref document number: 690463

Country of ref document: AT

Kind code of ref document: T

Effective date: 20141015

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602010019336

Country of ref document: DE

Effective date: 20141120

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

REG Reference to a national code

Ref country code: PT

Ref legal event code: SC4A

Free format text: AVAILABILITY OF NATIONAL TRANSLATION

Effective date: 20141223

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

Effective date: 20150108

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2526762

Country of ref document: ES

Kind code of ref document: T3

Effective date: 20150115

REG Reference to a national code

Ref country code: NL

Ref legal event code: T3

REG Reference to a national code

Ref country code: NO

Ref legal event code: T2

Effective date: 20141008

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

REG Reference to a national code

Ref country code: SK

Ref legal event code: T3

Ref document number: E 17837

Country of ref document: SK

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20141008

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150208

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20141008

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20141008

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150109

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20141008

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20141008

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602010019336

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20141008

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20141008

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20141008

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20150709

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150429

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20141008

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150429

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20141008

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20141008

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20141008

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20100429

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20141008

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20180418

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NO

Payment date: 20180423

Year of fee payment: 9

Ref country code: DK

Payment date: 20180418

Year of fee payment: 9

Ref country code: CH

Payment date: 20180419

Year of fee payment: 9

Ref country code: SK

Payment date: 20180430

Year of fee payment: 9

Ref country code: FI

Payment date: 20180419

Year of fee payment: 9

Ref country code: PT

Payment date: 20180426

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20180423

Year of fee payment: 18

Ref country code: AT

Payment date: 20180419

Year of fee payment: 9

Ref country code: BE

Payment date: 20180418

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20180418

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20180418

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20190418

Year of fee payment: 10

Ref country code: ES

Payment date: 20190521

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SI

Payment date: 20190320

Year of fee payment: 10

Ref country code: FR

Payment date: 20190424

Year of fee payment: 10

Ref country code: TR

Payment date: 20190418

Year of fee payment: 10

REG Reference to a national code

Ref country code: NO

Ref legal event code: MMEP

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: DK

Ref legal event code: EBP

Effective date: 20190430

REG Reference to a national code

Ref country code: SE

Ref legal event code: EUG

REG Reference to a national code

Ref country code: NL

Ref legal event code: MM

Effective date: 20190501

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 690463

Country of ref document: AT

Kind code of ref document: T

Effective date: 20190429

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20190430

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20190429

REG Reference to a national code

Ref country code: SK

Ref legal event code: MM4A

Ref document number: E 17837

Country of ref document: SK

Effective date: 20190429

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20191029

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190430

Ref country code: NO

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190430

Ref country code: SK

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190429

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190430

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190501

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190430

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190429

Ref country code: FI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190429

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190429

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190430

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190429

Ref country code: DK

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190430

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 602010019336

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200430

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20201103

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200430

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20210906

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200430

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200429